Lathe-tool holder



W. O. WILLE.

LATHE TOOL HOLDER.

APPLICATION HLED FEB.19.192|,

l ,420, 1 7 1 Patented June 20, 1922.

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i a una i WALTER 0. WILLR 03: VATERLO, IOWA.

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l'tqiplcationA filed February 19, 7.921.

T0 @ZZ fui/loam t muy concern:

Be it known that l. iVm/rsu t). lViLLr.. a citizen or" the United `States ol America and a resident oi; lllaterloo. llaekhaivlr County. iowa, have invented certain new and nse'liul lniprovei'nents in Lathe-Tool Holders, oli which the 'following' is a specification.

My invention relates Vto improvements iu lathetool holders, and the object oit my improvement is to provide in such a, holder quickly operable and adjustable means tor securely clamping a lathetool in the holder in an adjusted position. such means being` also quickly releasable.

This object l have aceomplished by the means which are hereinafter described and claimed. and wh ich are illustrated in the accompanying` drawings, in which Fig. l is a view, partly in side elevation and partly in inedial longitudinal. vertical sect-ion., oi my improved holder. and Fig'. 2 is a View, partly in plan and partly in section ot the parts shown in said Fig. l. Figs. 3 and i are similar views respectively to said lY and 2, but showing; a slightly modified 'form oit the adjustable clamping` means. Fig. 5 is a crosssection ot the Working-head ot the holder looking forwardly.

Similar numerals ot reference denote correspondingparts throughout the several views.

The device of `this invention is espe 'iall v designed 'tor use in supporting; and adjustably holding; a lathe-tool. tor the conditions attending the operations of a lathe upon a highly resistant materialv` such as specially hardened and alloyed steel.l are such that not only the tool but the holder therefor are sub jeeted to great strains which are of a nature to 'trae-ture or quickly Wear out a holder which is not capable of' proper resistance.

Experience has demonstrated that the shank l. of such a holder should be oii maxinnnn strength to prevent collapse, and especially, should not be bodily hollowed-longritudinally bored. or otherwise weakened at nodal or bearing' points. or at locations where the shank is clamped in a slide-rack or other support. ln my device. therefore. the shank l is a solid block oi steel and not weakened in any Way by reason of its formi its forward end beine' shaped to be laterally widened at 2 providing a Working-head whose upper part 2 is offset upwardly. An inclined longitudinal tool-seat bore l is provided in, said head opening in the front Specification of Letters Patent.

Larrrnroor, retornar..

Patented June 20, 1922.

Serial No. i/6.378.

Working- 'fare oitv the latter, While its rear end need extend but a short distance into said shunlr and not enough to weaken saine at the loration Where it is held in the slide-rest. l a forwardly directed prow or projection l.ending from the vlront working face of ie head. with its upper' surface alined with bottom surface ot the bore el to support Workin;v end oli the tool 8 near its point w ien said tool is mounted in said bore. Said head isprovided with another bore which ,friends troni the middle oit the rear oiiset i'aec oit said head longitudinally forwardly., inclined downwardly to meet the bore l ata common opening` in the front Working face orf said head. eonvergently. rllhe forward portion ot the second-mentioned bore is preterably square or non-circular in crosse section to seat a Wedge-block 7 which is thus uourotatable therein, and Whose beveled tare may engage the abutting fac-e of the too, 8 thereunder. This also locks said tool to prevent its turningy in the bore il, and facilitates mounting o'F the tool and the adjusting of the clamping-block 7. The rear part oi the second-mentioned bore is cylindri :al and oi `greater diameter than the bore part 5 to seat the rock-body 9 Which has a rearW-.uidly projeetinusquared boss 10 to be received by a wrench. The cylindrical outer suriare ot the body 9 has a medial annular groove ll.. the head 2 haring; tu'o cylindrical transverse holes to seat removable pins 12 and 'l2 which also traverse and loosely lit opposite parts ol said groove 1l. thus loe-kinff the body 9 in the bore part 6 While permittinu` it to be rotated. Said body 9 has an intoriorly-threaded arial bore 14.- extend ing partly through it from its front face to receive the threaded stem l5 projecting rearwardly trom the clamping-block 7. By this means. when ally said parts are in place, and the body 9 is turned in one direction. the clamping-block is Jforced into compressive engagement with the tool 8 near the Working @nd of the latter. lt Will be seen that because ot the eonyergeney of the bores 4, and the tool 8 is held in its seat and upon the ..f.up1,iortiner projection 3 with a maximum effect and as near as possible to its working edge. Because of this arrangement. the shortest possible remnant of the tool can be use-d. preventing Wastage. The movable parts are completely encased in the head except the boss i0 which is out of the Way.

ln the modification illustrated in Figs., 3

and 4, the body 9 is threaded enteriorly to i'it the interiorly threaded borepart 6a, while the stein 15a or' the clamping-bloei; 7 is not threaded but is merely provided with an annular channel or groove 11.6, the body 9 having two transverse holes to receive pins l/T and i8 to secure the body 9 on said stem while permitting its rotation. T his Ytorni olf' adjusting-means is actuated in the saine way as the one previously described to engage or release the clamping-block 7 by merely turning the boss l0, using a wrench.

Having described my invention, what i claim as new, and desire to secure by Let-- ters Patent, is:

l. A lathe-tool holder, comprising in coinbi'nation, a shank having a head with part thereof upwardly offset, said head having` bores positioned in ii-shape to converge approximately at the working tace of the head, with one bore opening at its opposite end at the offset part of said head, the other bore receiving a lathe-tool to project `from said l1eacl,and an adjustable clamping-element inovably mounted .in said lirstanentioned bore to compressively engage said tool while positioned at less than a right angle thereto in the second-mentioned bore.

Q. A lathe-tool holder, comprising in conibination, a shank having an upwardly oii'sct head, said head having tool-seating and clamp-element receiving bores meeting angularly near the working face of said head, the clamp-element receiving bore having its other end opening in the offset tace ot saidV head, a wedge-shaped clainping-elen'ient seated and longitudinally movable in said clamping-element receiving bore to engage a tool in said tool-seating bore at less than a right angle, and adjustable compres ionnieans in said clamping element receiving bore operable to engage and compress said clampingelement against said tool adjustably.

3. A lathe-tool holder, comprising in coinbination, a shank having an upwardly offset head, said head having tool-seatiiig and clamp-element receiving bores meeting an gularly near the working face oi: the head. the clamp-element receiving` bore being enlarged at its rear end opening in the oiiiset 'face of said head, a clamping-element seated slidably in the forward smaller part of the latter bore to engage a tool in the toolseating bore, and a compression device rotatably mounted in the larger part of said clamp-element receiving bore operable to propel. and adjustably compress said clamping-element against said tool.

Ll. L lathe-tool holder, comprising in Icombination, a rigid body having tool-seating and clamp-element receiving bores, meeting convergently near the working end oi the body, the Yforward part ot the clampelement receiving bore adjacent the tool-seating bore being or non-circular sha 3e, a non-rotatable elamping-eleinent mounted ior longitudinal adjustment in the non-circular part ot said bore to bear against tool seated in the toolseating bore, and an adjustable device mounted in the rear part ot said clampclement receiving bore to adjnstably compress said clamping-element upon said tool.

5. A lathe-tool holder. coinjirising in coinbination, va rigid body having tool-seating and clamp-device receiving bores meeting convergently near the working end of said body, said body having a projection on its working' end whose upper surta-ce lis continuous in the saine line as the lower face ot the tool-seating bore to underlie and support the projecting working end of a lathetool mounted in the latter bore, a clamping device mounted ior longitudinal adjustment in said clamp-devicebore whose longitudinal. axis extended tra-verses the tool in the toolseating bore and the said body projection angularly to loclr the tool between said device and said projection at the meeting place of said bores.

G. It lathe-tool holder, comprising in com-- bination. a shank having a working head off set upwardly forwardly obliquely, a clamp-i receiving bore extending from the offset face ot said head slnpingly downwardly to the 'forward tace thereof` and having its rear part cylindrically widened its narrower fois ward part being non-circular, said hea-d having a tool-seating bore, the said bores converging and having a common opening at the forward face of said head, a non-rotatable clamping wedge mounted in the non-circulsin part o'l said clamp-receiving borey and a rotatable'l device mounted in the larger cylindrical part of the latter bore and adapted toadjustably clamp said wedge against a tool. in said tool-seating bore.

Signed at Waterloo, owa, this 20th day olv Jan., 1921.

WALTER O. VVXLLE. 

